The complete kit PFC 915 is available for standard ceiling mounting situations. This support is height adjustable (46-74 cm). By adding the optional flat display interface FAU-D a back-to-back solution is created. By adding the optional flat display interface FAU-E one can create a "sky mounting" solution; in this case the included FAU-D will not be used. Sky mounting is new mounting option developed by Vogel's. The display can be mounted parallel to the ceiling for purposes where people are looking straight up (to the sky/ceiling). This option is very usefull for dental practices or other medical situations.